Improvement in wood-pavements



UNITED STATES PATENT C LEWIS S. FILBERT, OF PHILADELPHIA, PENNSYLVANIA,AN M. HOFFMAN, OF WASHINGTON, DISTRICT OF COLUM IM PROVEMENT lNWOOD-PAVEMENTS.

Specification forming partof Letters Patent No. 163.758, dated May 25,1875 app Api-n o, 1875.

To all whom -zt may concern:

Be it known that we, LEWIs S. FILEERT, ofPhiladelphia, Pennsylvania, andLINDLEY M. HOFFMAN, of Washington, in the District of Columbia, haveinvented certain new and useful Improvements in Wood-Pavements; and dohereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,and to the letters of reference marked thereon, making a part of thisspecification.

Our invention relates to pavements made of round Wooden blocks 5 and itconsists in a round-block pavement With a vulcanite plastic filling andcovering of the same, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which our inventionappertains to make and use the same, we will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in whieh-Figure 1 is a plan View otl our pavement, and Fig. 2 is a side viewofthe same.

A represents a foundation made of broken stone, sand, or vulcanite, andproperly rolled or packed. Upon this foundation are laid round woodenblocks B B, made of either locust, chestnut, cedar, or any othersuitable and durable wood. These blocks should be of about the samelength, but the size of their diameter is immaterial. They are laid onend upon the foundation A, and the spaces between them lled with plasticvulcanite concrete,

marked C, and the top of the with the same, so as to [ill stices, andmake a perfectly n ment, said top-dressing bein,` the drawing.

In the round-block pavemen laid, the blocks will work lo water in,thereby causing the 1 a displacement of the blocks, upheaval ot' thepavement in t year.

This difficulty is entirely o mode of laying the pavement ite filling C,in hardening, com solidly and irmly together, ai. top-dressing D alsounites v and filling, forming one solid n the water from passing throngblocks.

Having thus fully describe what We claim as new, and des Letters Patent,is-

A round-block pavement p vulcanite plastic filling and coi tially asherein set forth.

In testimony that we claim tl have hereunto set our hands April, 1875.

L. S. l

L. M. Witnesses S. T. LUOKETT, T. NAYLOR.

